The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-733-8940, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-733-8940 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Head Height | 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Fastener Length | 1.19 INCHES MINIMUM AND 1.25 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-DTL-13924, CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE AND AMS-QQ-P-416 TYPEII, CLASS 2 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 1.19 INCHES MINIMUM AND 1.25 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5731 OR AMS5737 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | NAS1352 NATIONAL STD/SPEC |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN THREADS |
| Surface Treatment | BLACK OXIDE AND CADMIUM OVERALL |
| Chamfer Angle | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| Internal Drive Style | RECESSED TYPE I |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNRC |
| Head Diameter | 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 721-8541940-15 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| LSA000515-15 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| NAS1352 | 3/1 Design control — primary reference U.S. Government activity |
| 68-01-4125BW | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| NAS1352-8LE20 | 3/2 Design control — primary reference U.S. Government activity |
| R8611707-15 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5305-01-733-8940 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-733-8940: Width Across Flats: 0.375 INCHES NOMINAL IN; Head Height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Fastener Length: 1.19 INCHES MINIMUM AND 1.25 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-DTL-13924, CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE AND AMS-QQ-P-416 TYPEII, CLASS 2 ASSN STD 2ND TREATMENT RESPONSE OVERALL. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.